Charging apparatus for blast-furnaces.



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MAR'UX J. SHAXXOX, Ul STEELTUN, ll-INXSYLVAXIA.

CHARGING APPARATUS FOR BLAST-FURNACES.

Spcification of Letters Patent.

Patented Sept. 8, 1903.

Application filed March 11. 1908. Serial No. 420,317.

in all 217mm if mqy concern:

e. =siiizen of the l'uitc-d 511105, and :1 resident of Steeltou, in the "ounty of Dauphin anal brute of Pennsylvania. have invented vermin not. and useful llllpl'UTPlllQlliS in Charging ilgr-parittus for Blasttn-laces, of which the l liowing is u speriliention.

My invention relates to improvements in' to 5 last liirnare top and charging apparatus and the objects of my invention are to thorghly mix the (-lnarge litiult f edii; it to the furnace and to furui h :1 top whirl: will he substantially gas tight at all times. in an application for patent on rhar iug' -*ptil'zl1tls for hlus'i luruaees.

-=l by me on June 2. Huh. l lnzit Filtflfll ivst-t'iln'rtl a menus for mixing and for evenly distributing: the 'll ll'fli to a la: Rare. In my prose-ill invention I prefer to use the some mixin; and distrilmtiu; means shown in my former :tmilieation. viz, a toothed plug sealing :1 charging bole plat-ed centrally shove the furnuee and a distributirig plate in or below this hole for wintering the charge even y m. or the fut-nave top when the plug is hired. The sealing phi; when seated over the (hut-gin hole $i-Zll5 it and its top is orrimged, when it is fully lifted to engage and seal an opening in the top of the chamber or hopper in which the plug is piaeed. Above the rhumlier or hopper enrtying the sealing plug;- l preferably plot-e another lmpper the bottom of which 1 time with a bell \vliieh may be opt-rated entirely independently of the sealing plug. The purpose of the latter arrangement is to t'nlllpietely seal the top of the i'ut'liure during movements of the sealing plug when the 4 latter is lifted from it sen-t.

My invention is illustrated in the act-onipatty drawings which show, in central vertical sectional elevation, the upper part ol a. Host furnace fitted with my improved top.

1 represents the brick or masonry wort: at the top of the furnace. 2 a hopper furnished with a throat or opening 3 which is placed centrally of the furj nwe top.

4 is my mixing and sealing phi; the lower end of which is adapted to make a tight j intwith the lower end of the hopper 2. T he plug is furnished with arms or teeth A rod 6 attached to the uppe part. of plug used to lift the latter when the furnace is t he closed.

lur-

So far my resent inrentioi'i is similar to it. known that 1, MA i'ilx J4 'fiuixxox, I my former one.

The top of the ma n hopper-Z is furnished with a circular opening 7 the sides of which are prefeiohly lonned by inwardly and (low! wiirdly int-lined flanges S of a casting 9 whit-h is carried by the top oi the main hopper 2. The top of the sealing plo is, when it is lifted. adapted to engage and make :1 tight joint with the l me! edge of the flange 5 and to thi end he top of the plug is prefer- :t-l ly conical in form.

it) a hopper rztrri-Td upon walls 12 that are carried by the top of the casting 9, the bottom of whieh closed by a bell 13 the stem ii of which hollow and through 'lzieh pusfles the rod (5 whit-h is attuvheti to plug -i. Any suitohle ,uid well known means may be employed to lift and lower the hell ]3 and plug -l.

in operation the rhzrrge is first dropped into hopper H) the hell 13 of which is tightly s mted :lflillla'l its bottom. At the proper time the bell 13 is lowered and the Charge fzlll down upon the flange S of the tlsllllff 9 to the coniml top of the plug 4 from which it falls to the hopper '2 and distributes itself practically evenly around the ilug" 4. As soon as the hopper 1 is emptied the hell 13 i; lifted sealing: the bottom of hopper 10. When it is (lt3lt'id to charge the furnace the plugl is lifted the tee h .3 tearing through and thoroughly mixing: ll1( L'll:Hfl in hopper 2. and the (lutlfQfO falls through the opening 3 lo the furnace. The opening 3 may or may not he furnished with the delleetiu; plates ll, deserihed in my former application. lot more evenly distributing the (.'ll:lt' ',{t over the top of the eontenboi the furnace. During the lilting and lowering of the plug, -l therewill be an interval when gases win pass through holes 3 and T; the bell I3, lnnvever, will prevent their enenpe to the air.

In all iiliist furnuees there are at times so called explosions of gas. The even di; Shution of the charge with my device is designed to do away with thi hut should such explosions oeeur they will partly expend their force by lifting the heavy plug 4. whit-h tic-ts :is a spring in such cases and gives the neeumuluted g'lis time to seek and pass oil through the. gas downtukes 15 which lead to the stoves, to gas engines. or other plan-es where the gases are utilized. The closed top arrangement that l have shown particularly useful in cases where it desired to conserve all of the gases generated by the forname for any of the uses to 'which said gases may be put.

Having thus described my invention .1 claim as new and desire to secure by Letters Pa tent 'l. The combination with a blastfurnace, of ahopper having openings at its to and bottom, and a sealing plug within will penndapted when lowered to close off the bottom opening and when raised to close off the to opening in said hopper.

2. het-oinbinotion with a blast furnace, of :1 hopper having at its top an opening sun rounded by an inwardly projecting flange and at its bottom an opening, and a sealing plug having a coniral top within said hopper, said plug being adapted when in a lowered positron to close off the bottom of snid hopper and when in a raised position to close oil its top.

3. The r-mnbiImt-ion with :1 blast furnace, of a hopper having on opening in its top and an opening in its bolt-om, a sealing plug within said hopper adapted when lowered to close,

off the bottom opening and when raised to close off the top opening, a. second hopper placed above said first hopper, a bell for closing the discharge end of snid hopper, walls for carrying said second hopper, and means, operated independently f one another, for operating said sea-ling plug and hell.

4. The combination with a blast furnace, of a hopper having an opening in its top and bottom, a sealing plug within said hopper adapted when lowered to close. off the bot tom opening and when raised to close off the top opening, an operating rod centrally'zitta-ohed to the upper end of said sealing plug, a second hopper placed above said first hopper, walls upon which said second hopper is carried, a bell, the stem of which is hollow and through which the o )erating rod of said plug passes, for closing t- 101 lower end of said second hopper, and means for operating said hell.

IrL-all'llhl J. SllANNOX Witnesses Crmnnns J. Gnnn, T norms 'l. Mclfixrnn. 

